Methods and apparatus for perfusion, diagnosis, storage and/or transport of an organ or tissue

Apparatus for containing an organ or tissue for at least one of perfusion, storage, diagnosis and transport of the organ or tissue, comprising: - a portable casing, the portable casing including more than one lid that forms a substantially hermetic seal with the portable case; and - an organ or tissue support surface configured to support the organ or tissue within the portable housing while allowing effluent medical fluid to pass through the organ or tissue, wherein the portable housing is configured to be received by at least one of an infusion device, a transporter and a diagnostic device, wherein the portable housing includes one or more openings configured to allow tubes to pass through said one or more openings and be connected to the organ or tissue, and wherein each of the caps includes a hydrophobic membrane that helps maintain a equal pressure between the inside and outside of the portable case, and wherein the portable housing includes a pressure control valve associated with the membrane that allows the pressure within the portable housing to be varied, and the pressure control valve configured to limit the rate at which changes are transmitted of external pressure to the interior of the portable case.